dev tun server 192.168.0.0 255.255.0.0 comp-lzo ping-timer-rem persist-key ca ca.crt cert server.crt key server.key cipher AES-256-CBC auth SHA512 dh dh2048.pem crl-verify crl.pem remote-cert-tls client keepalive 10 120 client-config-dir ccd status /var/log/openvpn-status.log 10 status-version 2 client-to-client